#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# @Author: CoderXYX
# @Email : xue752834620@126.com
# @Date  : 2019/5/3
# @Software: PyCharm

from PIL import Image
# 从指定位置打开
# 从指定位置打开(相对路径)
IMG = "./Resources/python.png"
# 从指定位置打开(绝对路径)
# IMG = "Resources\\python.png"
# WIDTH=args.width
# HEIGHT=args.height
# OUTPUT=args.output'
WIDTH = 150
HEIGHT = 80
ascii_char = list("$@B%8&WM#*oahkbdpqwmZO0QLCJUYXzcvunxrjft/\|()1{}[]?-_+~<>i!lI;:,\"^`'. ")


# 将256灰度映射到70个字符上
def get_char(r, g, b, alpha=256):  # alpha透明度
    if alpha == 0:
        return ' '
    length = len(ascii_char)
    gray = int(0.2126 * r + 0.7152 * g + 0.0722 * b)  # 计算灰度
    unit = (256.0 + 1) / length
    return ascii_char[int(gray / unit)]  # 不同的灰度对应着不同的字符
    # 通过灰度来区分色块


if __name__ == '__main__':
    im = Image.open(IMG)
    im = im.resize((WIDTH, HEIGHT), Image.NEAREST)
    txt = ""
    for i in range(HEIGHT):
        for j in range(WIDTH):
            txt += get_char(*im.getpixel((j, i)))
        txt += '\n'

    # print(txt)
    # 相对路径
    with open("./Result/output.txt", 'w') as f:
        f.write(txt)
    # 绝对路径
    # with open("Result\\output.txt", 'w') as f:
    #     f.write(txt)
